﻿<!DOCTYPE html>
<html>
<head>
  <title>Parallel Route Links</title>
  <!-- Copyright 1998-2021 by Northwoods Software Corporation. -->
  <meta name="description" content="Custom non-Orthogonal non-Bezier Links that have parallel routings for multiple links connecting the same pair of ports." />
  <meta name="viewport" content="width=device-width, initial-scale=1">

  <script src="../release/go.js"></script>
  <script src="../assets/js/goSamples.js"></script>  <!-- this is only for the GoJS Samples framework -->
  <script src="ParallelRouteLink.js"></script>
  <script id="code">
    function init() {
      if (window.goSamples) goSamples();  // init for these samples -- you don't need to call this

      var $ = go.GraphObject.make;

      myDiagram =
        $(go.Diagram, "myDiagramDiv",
          {
            "undoManager.isEnabled": true
          });

      myDiagram.nodeTemplate =
        $(go.Node, "Auto",
          new go.Binding("location", "loc", go.Point.parse),
          $(go.Shape,
            {
              portId: "",
              fromLinkable: true, toLinkable: true,
              fromLinkableDuplicates: true, toLinkableDuplicates: true,
              cursor: "pointer"
            },
            new go.Binding("fill", "color")),
          $(go.TextBlock,
            { margin: 8 },
            new go.Binding("text"))
        );

      myDiagram.linkTemplate =
        $(ParallelRouteLink,
          {
            relinkableFrom: true, relinkableTo: true,
            reshapable: true //, resegmentable: true
          },
          $(go.Shape, { strokeWidth: 2 },
            new go.Binding("stroke", "fromNode", function(node) { return node.port.fill; }).ofObject()),
          $(go.Shape, { toArrow: "OpenTriangle", strokeWidth: 1.5 },
            new go.Binding("stroke", "fromNode", function(node) { return node.port.fill; }).ofObject())
        );

      myDiagram.model = new go.GraphLinksModel(
        [
          { key: 1, text: "Alpha", color: "lightblue", loc: "0 0" },
          { key: 2, text: "Beta", color: "orange", loc: "130 70" },
          { key: 3, text: "Gamma", color: "lightgreen", loc: "0 130" }
        ],
        [
          { from: 1, to: 2 },
          { from: 2, to: 1 },
          { from: 1, to: 3 },
          { from: 1, to: 3 },
          { from: 3, to: 1 },
          { from: 1, to: 3 },
          { from: 1, to: 3 }
        ]);
    }
  </script>
</head>
<body onload="init()">
<div id="sample">
  <div id="myDiagramDiv" style="border: solid 1px black; width:100%; height:600px"></div>
  <p>
    A <b>ParallelRouteLink</b> is a custom <a>Link</a> that overrides <a>Link.computePoints</a>
    in order to produce a middle segment that is parallel to the routes of other <b>ParallelRouteLink</b>s
    connecting the same two ports.
  </p>
</div>
</body>
</html>
